2507 (UNS S32750) Steel Pipes

Womic Stainless Steel is committed to supplying high-quality super duplex stainless steel pipes with strict quality control throughout production. Pipes can be delivered with full material traceability, mill test certificates (EN 10204 3.1 / 3.2), and third-party inspection upon request (DNV, SGS, BV, TUV, etc.).
Custom dimensions, wall thicknesses, surface finishes, and inspection requirements are available to meet project-specific needs.

Available Grades / Materials of Womic Duplex Stainless Steel Tubes:

Category     UNS No.     EN / DIN     Common Name

Duplex Stainless Steel S31803       1.4462  2205

Super Duplex Stainless Steel   S32750       EN1.4410 2507

Super Duplex Stainless Steel   S32760       1.4501  Zeron 100

Lean Duplex Stainless Steel     S32101       1.4162  2101

Lean Duplex Stainless Steel     S32205       1.4462  SAF 2205

Super Austenitic Alternative      N08926       1.4529  6Mo (254 SMO)

Equivalent Grades Summary

Duplex 2507 (UNS S32750) is considered fully equivalent across the following international grades: •  UNS S32750 (USA)  •  EN 1.4410 / X2CrNiMoN 25-7-4 (Europe)  •  AFNOR Z3 CN 25.06 Az (France)  •  SAF 2507 (Trade designation)

All materials are supplied in solution annealed and pickled condition, ensuring optimal corrosion resistance and surface integrity.

These standards ensure that Duplex 2507 / UNS S32750 Steel Pipes meet global requirements for chemical composition, mechanical performance, testing, and dimensional accuracy.

Different specifications can be customized according to special requirements.

CHEMICAL PROPERTIES

Typical Values (Weight %)

Mechanical Properties of Duplex 2507 / UNS S32750 Steel Pipes:

Duplex 2507 stainless steel combines high tensile strength and excellent impact toughness with a low coefficient of thermal expansion and high thermal conductivity. This balanced set of mechanical and physical properties makes Duplex 2507 well suited for a wide range of structural and mechanical applications, particularly in demanding environments.

The mechanical properties of Duplex 2507 at ambient and elevated temperatures are summarized below. All test data are based on material supplied in the solution-annealed and water-quenched condition.

Duplex 2507 is not recommended for prolonged service at temperatures above 570°F (300°C), as extended exposure may lead to a reduction in toughness and corrosion resistance.

The values presented are typical for wrought products and are provided for reference only. They should not be interpreted as guaranteed maximum or minimum values unless explicitly specified by the applicable standard.

Low Temperature Impact Properties

The physical properties of Duplex 2507 / UNS S32750 Steel Pipes are tabulated below.

Elevated Temperature Tensile Properties Duplex 2507 / UNS S32750 Steel Pipes

Values obtained for hot rolled plates (th ≤ 2"). Alloy 2304 must not be used for a long time at temperatures higher than 300°C (572°F),where precipitation hardening phenomenon occurs.

PHYSICAL PROPERTIES of Duplex 2507 / UNS S32750 Steel Pipes

Density:7,800 kg/m3 - 0.28 lb/in3

Hot Formingof Duplex 2507 / UNS S32750 Steel Pipes
Duplex 2507 should be hot worked within the temperature range of 1875°F to 2250°F (1025°C to 1230°C). After hot forming, the material must undergo solution annealing at a minimum temperature of 1925°F (1050°C), followed by a rapid air or water quench to restore the optimal duplex microstructure and corrosion resistance.

Cold Forming of Duplex 2507 / UNS S32750 Steel Pipes
Most conventional stainless steel cold forming methods are applicable to Duplex 2507. However, due to its higher yield strength and lower ductility compared to austenitic stainless steels, fabricators should expect

Higher forming forces of Duplex 2507 / UNS S32750 Steel Pipes
Larger bending radii
Increased allowance for elastic springback
Processes such as deep drawing, stretch forming, and severe deformation are more challenging with Duplex 2507 than with austenitic grades. When cold deformation exceeds 10%, a solution anneal followed by quenching is strongly recommended to recover mechanical properties and corrosion resistance.

Heat Treatment of Duplex 2507 / UNS S32750 Steel Pipes
Duplex 2507 should be solution annealed and quenched after both hot and cold forming operations. Solution annealing must be performed at a temperature of not less than 1925°F (1050°C), followed immediately by rapid air or water quenching.

To achieve maximum corrosion resistance, heat-treated products should be pickled and thoroughly rinsed to remove surface oxides and contaminants formed during processing.

Womic Steel adopts advanced production technology to ensure each Stainless Steel - of Duplex 2507 / UNS S32750 Steel Pipes meets exact specifications and flawless surface quality.

1. Raw Material Selection:High-qualityof Duplex 2507 / UNS S32750 Steel Pipes Stainless Steel Pipebillets from certified mills (Baosteel, TISCO, POSCO).

2. Heating and Piercing:Billets heated to a controlled temperature and pierced using a rotary piercing mill to form hollow shells.

3. Hot Rolling:Shells elongated and rolled to desired size.

4. Cold Drawing / Cold Pilgering:Pipes refined to precise dimensions and improved surface finish.

5. Solution Annealing:Heat treatment to restore corrosion resistance and ductility.

6. Pickling & Passivation:Removal of oxides and creation of passive film for enhanced corrosion protection.

7. Straightening and Dimensional Calibration:Ensures consistent roundness and wall uniformity.

8. Final Inspection & Marking:Each pipe tested, marked with grade, heat number, and standard before packing.

This process guarantees a smooth internal bore, high structural integrity, and exceptional corrosion resistance across all batches of Womic Steel’sof Duplex 2507 / UNS S32750 Steel Pipes

Womic Steel utilizes state-of-the-art manufacturing technology to ensure everyStainless Steel - of Duplex 2507 / UNS S32750 Steel Pipesmeets precise specifications and delivers excellent surface quality and performance.

1. Raw Material Selection:High-qualityof Duplex 2507 / UNS S32750 Stainless Steel Pipestainless steel strips/coils from certified suppliers (e.g., Baosteel, TISCO, POSCO).

2. Slitting & Uncoiling:The steel coil is slit to the required width and uncoiled for feeding into the forming mill.

3. Forming & Welding:The strip is progressively formed into a cylindrical shape and the edges are welded together using advanced TIG or Plasma welding techniques to create a solid weld seam.

4. Weld Seam Treatment:The external weld bead is removed to achieve a smooth surface, and the internal bead may be controlled or treated for bore cleanliness.

5. Solution Annealing:A full heat treatment process is applied to dissolve carbides, restore corrosion resistance, and relieve stresses from welding and forming.

6. Sizing & Calibration:The pipe is passed through a sizing mill to achieve the final precise outer diameter and roundness.

7. Straightening:The pipe is straightened to ensure optimal linearity.

8. Pickling & Passivation:Chemical treatment removes scale and impurities, while promoting the formation of a protective passive oxide layer on the surface, including the weld zone.

9. Non-Destructive Testing (NDT):The weld seam is inspected using methods like Eddy Current or Ultrasonic Testing to ensure integrity and quality.

10. Final Inspection & Marking:Each pipe undergoes dimensional checks, visual inspection, and is marked with grade, heat number, and relevant standards before packaging.

This controlled process guarantees a consistent weld seam, excellent dimensional accuracy, and superior corrosion resistance for every batch of Womic Steel's of Duplex 2507 / UNS S32750 Steel Pipes.

Outside Diameter:6mm – 1219mm (1/4" – 48")

Wall Thickness:0.5mm – 50mm (SCH 5S – SCH XXS)

Length:Up to 12m(fixed or random)

Tolerances:According to ASTM A999 / EN ISO 1127

Womic Steel offers a wide range of surface finishes to meet various industrial, sanitary, and decorative applications.

Each Stainless Steel - of Duplex 2507 / UNS S32750 Steel Pipes surface is inspected for uniform gloss, absence of pits, and consistent finish quality.

Everyof Duplex 2507 / UNS S32750 Steel Pipesundergoes comprehensive inspection in accordance with ASTM, EN, and GB standards to guarantee reliability and performance:

• Visual & Dimensional Inspection:Surface, roundness, and thickness checked.
• Hydrostatic Pressure Test:100% tested for leakage and pressure resistance.
• Eddy Current Test:Detects surface and sub-surface imperfections.
• Ultrasonic Test (UT):Ensures internal integrity of the seamless structure.
• Positive Material Identification (PMI):Confirms correct chemical grade of of Duplex 2507 / UNS S32750 Steel Pipes
• Intergranular Corrosion Test (IGC):Validates resistance to sensitization.
• Flattening & Flaring Tests:Evaluate ductility and deformation capability.
• Hardness & Tensile Testing:Confirms mechanical compliance with ASTM standards.
• Surface Roughness and Cleanliness Check:For sanitary or polished tubes.
• Third-Party Inspection (SGS / BV / TUV):Available upon customer request.

These extensive tests ensure that every Stainless Steel - of Duplex 2507 / UNS S32750 Steel Pipes from Womic Steel meets the highest international standards for reliability and longevity.

MAIN APPLICATIONS of Stainless Steel -of Duplex 2507 / UNS S32750 Steel Pipes:

Chemical processing, transport and storage – pressure vessels, tanks, piping, and heat exchangers

Oil and gas exploration and processing equipment – piping, tubing, and heat exchangers

Marine and other high chloride environments

Effluent scrubbing systems

Pulp and paper industry – digesters, bleaching equipment, and stock-handling systems

Cargo tanks for ships and trucks

Food processing equipment

Biofuels plants

Stainless Steel - of Duplex 2507 / UNS S32750 Steel Pipes is ideal for a wide variety of industries, offering long service life and corrosion resistance in demanding conditions:

Stainless Steel - of Duplex 2507 / UNS S32750 Steel Pipes for Chemical and Petrochemical Industry:Process piping, acid-resistant lines.

Stainless Steel - of Duplex 2507 / UNS S32750 Steel Pipes for Food and Beverage Industry:Sanitary systems, liquid transfer, brewing pipelines.

Stainless Steel - of Duplex 2507 / UNS S32750 Steel Pipes for Pharmaceutical Equipment:Clean piping, sterile environments.

Stainless Steel - of Duplex 2507 / UNS S32750 Steel Pipes for Heat Exchanger Tubes:Boilers, condensers, and evaporators.

Stainless Steel - of Duplex 2507 / UNS S32750 Steel Pipes for Marine Engineering:Offshore pipelines, seawater systems, desalination, ballast piping (ship classification certifications available from ABS, BV, DNV, LR, GL, RINA, CCS, KR, NK).

Stainless Steel - of Duplex 2507 / UNS S32750 Steel Pipes for Construction and Decoration:Handrails, structural and architectural applications.

Stainless Steel - of Duplex 2507 / UNS S32750 Steel Pipes for Water Treatment and Gas Systems:High-purity and corrosion-resistant pipelines.

EachStainless Steel - of Duplex 2507 / UNS S32750 Steel Pipesis securely packed and clearly labeled to ensure safe and efficient transport worldwide.

General packaging: Bundle packing with woven fabric, iron strip bundle, plastic cap on two ends for local truck transport.

Hexagonal packaging: Bundle packing with woven fabric, iron strip bundle, plastic cap on two ends for local truck transport.

Packaging of welded pipe in medium and large sizes: Wrapped with woven fabric by automatic packaging for export sea-worthy transport.

Packaging for medium and large size welded pipes to be exported: Wooden or steel crate packaging for export sea-worthy transport.

General packaging for products to be exported: Wooden box for export sea-worthy transport.

Packaging of condensation pipe and low-pressure heater tube: Wooden box for local truck and export sea-worthy transport.

1. Direct cooperation with global shipowners ensures the most competitive freight rates.

2. Professional loading and securing teams guarantee damage-free shipment.

3. Efficient document preparation, minimizing customs delays.

4. Rapid delivery time — standard sizes kept in ready stock more than 10,000tons.

5. Continuous cargo tracking and after-sales follow-up to ensure smooth arrival at destination.

Womic Steel is a trusted manufacturer and exporter specializing inStainless Steel - of Duplex 2507 / UNS S32750 Steel Pipes ,committed to delivering premium quality and professional service.

• Strict quality control under ISO and PED certification.
• Modern production lines and experienced technicians.
• Complete testing, inspection, and documentation support.
• Flexible customization and surface finishing options.
• Fast production cycle and reliable global shipping.